ADD and ADHD are different disorders.

Question

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ADHD, previously referred to as ADD, is a condition of persistent inattention leading to hyperactivity and impulsivity. ADHD is traditionally considered a hyperactivity issue, but many children and adults simply have difficulty maintaining attention and have no hyperactivity problems. Therefore, ADHD has been broken down into subtypes: ADHD combined type, ADHD predominately inattentive type, and predominately hyperactivity-impulsive type.

ADD and ADHD Are Different Disorders